Mechanism for the transmission of power or motion.



PATENTED APR. 25, 1905.

J. BRING.

MECHANISM FOR THE TRAN SMISSION OF POWER OR MOTION.

APPLICATION FILED JUNE 16. 1902.

Patented April 25, 1905.

UNiTE STATES PATENT @FFice.

JOHN BRING, OF LONDON, ENBLANI).

MECHANISM FOR THE TRANSMISSION OF POWER OR MOTION.

SPECIFICATION forming part of Letters Patent NO. 787,904, dated April 25, 1905.

Application tiled June 16,1902. Serial No. 111,923.

To 117/ whom it may coll/cent:

lie it known that I. Joux Dnixe, a subjectot' llis .\la jesty the King of Great Britain, re-

siding at London, in the county of Middlesex, England, have invented new and useful Improvements Relating to Mechanism for the 'lransmission of Power or Blotion, of which the following is a specilication.

My present invention relates to the manufacture ot mechanism for the transmission of power or motion, such as described in Howdens United States Patent No. (309,570. The transmitting mechanism as described in that patent consists of an inner or inextensible member within an outer or incompressible member, constructed by coiling a wire circular in transverse section into a closely-wound helix, each turn of wire abutting the next one:

but with wire circular in transverse section it I will be apparent that the turns of wire only touch each other at one point of their circumference, and when the said mechanism is bent to a curve there is a tendency for the helices ot' the incompressible member to mount or ride upon each other.

My present invention has for its object to produce a stronger, better, and more closely wound incompressible member, and thereby an improved mechanism of the character alluded to.

.-\ccori.ling to my invention I employ wire of D, crescent, or U section or of some transverse section other than circulan such as square, angular, or oblong section so that when the said wire is turned into a helix the Hat or concave side of the one turn abuts onto or interlocks with the tlat or convex side of the adjacent turn.

in the accompanying drawings, Figure 1 shows in longitudinal section a length of mechanism slightly bent orcurved, the incol'npressible member being of D, U, or crescent section. Fig. 2 shows a length of mechanism with the incon'ipressible member of approximately square or rectangular section, and Fig. 3 is a similar view with an incompressible member of oblong or oval section.

in all the figures, it is the inextensiblememher, and is the incompressible member. As

will be understood, the inextensible member u is flexible and is adapted to pass t'reely through the incompressible member 7) and to move longitiulinally therein. As will be seen in Fig. l, the incompressible member (I is formed of D, U, or crescnt section, so that a concavity c is formed in each turn of wire. \Vhen the mechanism is in a straight length, the convexity of each turn lies within the concavity e of the adjacent turn. \Vhen the length is bent or curved, the inner parts of the coil turn or knuckle in each other and those on the periphery of the curve open somewhat, as shown; but it will be seen that each turn may be separated from its neighbor before a direct opening or gaping occurs.

As will be seen in Fig. 2, the incompressible member /1 is formed of approximately square or rectangular section, each flat side abutting closely against the next turn of wire. The corners need not be strictly right angles, but may be cut or rounded off.

Fig. 3 shows the incompressible member 6 of oblong section, with the internal and external sides slightly rounded or curved, thus making the whole wire more or less oval in transverse section.

It will be noticed that the two members a and 71 are to be arranged and operated in preciscly the same manner as in the Bowden patent referred to, the ends of the incompressible member being held between lixed abutments and the inextensible member being connected at one end to a brake or other part to be operated, while the opposite end is connected with a lover or other operating device.

\Vhat I claim, and desire to secure by Letters Patent ot the United States, is-- 1. i\[echanism t'orlhe transmission of power or motion in a longitudinal or axial direction comprising a closcly-wouml helix of wire of transverse section other than circular constituting an incompressible member and a flexible inextensible member passing freely through said incompressible member and movablelongitudinally therein.

Mechanism for the transmission of power or motion in a longitudinal or axial direction comprising an incompressible member and a flexible endwise-movable inextcnsible member passing freely therethrough, said incomsible member passing freely through said in- IQ presslble member consisting of a closelycompressible member.

Wound helix of Wire of transverse section other In testimony whereof I have hereunto subthan eircLlilar. scribed my name. 5 3. Mec ianism for the transmission of power or motion in a longitudinal or axial direction JOHN DRING' comprising a closely-Wound helix of Wire of Witnesses: concaved crescent section constituting the in- A. F. HOOVER, compressible member and a flexible inexten- J. S. WITHERS. 

